:root{
  --primary:#FF6B3D;
  --primary-deep:#F0522A;
  --primary-soft:#FFEDE3;
  --dark:#2B2118;
  --border:#F0E4D8;
  --bg:#FFFFFF;
  --bg-soft:#FBF6EE;
  --text:#2E2620;
  --text-2:#6E5F52;
  --radius:16px;
  --shadow:0 12px 32px rgba(70,45,25,.08);
  --shadow-hover:0 18px 42px rgba(255,107,61,.18);
  --nav-h:66px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px)}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;font-size:15px;-webkit-font-smoothing:antialiased}
img{display:block;width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-soft{background:var(--bg-soft)}
.section-title{font-size:34px;font-weight:800;color:var(--text);text-align:center;letter-spacing:.5px}
.section-sub{font-size:15px;color:var(--text-2);text-align:center;margin-top:10px}

.btn{display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;padding:14px 30px;border-radius:999px;border:1px solid transparent;white-space:nowrap;transition:transform .25s,box-shadow .25s,background .25s,border-color .25s}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(255,107,61,.30)}
.btn-primary:hover{background:var(--primary-deep);transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,107,61,.38)}
.btn-ios{background:#fff;color:var(--text);border-color:#E9DED2;box-shadow:0 4px 14px rgba(70,45,25,.05)}
.btn-ios:hover{transform:translateY(-2px);border-color:#D9CBB9;box-shadow:var(--shadow-hover)}

.header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.header.scrolled{box-shadow:0 6px 22px rgba(70,45,25,.08)}
.nav{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{font-size:24px;font-weight:800;color:var(--dark);line-height:1.4;white-space:nowrap}
.logo-accent{color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:none}
.nav-menu::-webkit-scrollbar{display:none}
.nav-menu a{display:block;padding:7px 11px;font-size:14px;color:var(--text-2);border-radius:8px;white-space:nowrap;transition:color .2s,background .2s}
.nav-menu a:hover{color:var(--primary);background:var(--primary-soft)}
.nav-menu a.active{color:var(--primary);font-weight:600}
.nav-download{flex-shrink:0;font-size:13px;font-weight:600;color:#fff;background:var(--primary);padding:8px 16px;border-radius:999px;white-space:nowrap;transition:background .2s,transform .2s,box-shadow .2s}
.nav-download:hover{background:var(--primary-deep);transform:translateY(-1px);box-shadow:0 6px 16px rgba(255,107,61,.35)}

.hero{padding:calc(var(--nav-h) + 60px) 0 76px;background:linear-gradient(180deg,#FFF1E6 0%,#FFFFFF 70%);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:440px;height:440px;border-radius:50%;background:radial-gradient(closest-side,#FFD9C2,transparent);top:-160px;right:-120px;pointer-events:none}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero-title{font-size:44px;font-weight:900;line-height:1.28;color:var(--dark)}
.ver{display:inline-block;font-style:normal;font-size:15px;font-weight:700;color:var(--primary-deep);background:var(--primary-soft);border:1px solid rgba(255,107,61,.30);padding:4px 12px;border-radius:999px;margin-left:10px;vertical-align:middle;letter-spacing:.3px;white-space:nowrap}
.hero-desc{margin-top:22px;font-size:16px;color:var(--text-2);line-height:1.9;max-width:540px}
.hero-btns{display:flex;gap:16px;margin-top:34px}
.hero-cover{max-width:340px}
.hero-cover img{border-radius:20px;box-shadow:var(--shadow)}

.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px}
.work-card{margin:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:#fff;transition:transform .3s,box-shadow .3s}
.work-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.work-info{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 16px}
.work-name{font-size:15px;color:var(--text)}
.work-tag{font-size:12px;color:var(--text-2);white-space:nowrap}

.intro-box{margin-top:48px;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:20px;padding:44px;box-shadow:var(--shadow)}
.intro-text p{font-size:15.5px;color:var(--text-2);line-height:2;margin-bottom:16px}
.intro-text p:last-child{margin-bottom:0}
.intro-text b{color:var(--text)}
.intro-list{display:flex;flex-direction:column;gap:20px;background:var(--primary-soft);border-radius:var(--radius);padding:28px 26px}
.intro-list li{display:flex;gap:14px;align-items:flex-start}
.tick{width:22px;height:22px;border-radius:50%;background:var(--primary);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:4px}
.intro-list b{display:block;font-size:15.5px;margin-bottom:4px}
.intro-list p{font-size:13.5px;color:var(--text-2);line-height:1.7}

.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px 26px;transition:transform .3s,box-shadow .3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.feature-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feature-icon svg{width:26px;height:26px}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-2);line-height:1.85}

.compare-wrap{margin-top:48px;background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow)}
.compare-table{width:100%;border-collapse:collapse}
.compare-table th{background:var(--bg-soft);padding:16px 18px;font-size:15px;font-weight:700;text-align:center;white-space:nowrap}
.compare-table td{padding:14px 18px;font-size:14.5px;color:var(--text-2);text-align:center;border-top:1px solid var(--border)}
.compare-table td:first-child{text-align:left;font-weight:600;color:var(--text);white-space:nowrap}
.compare-table th.best::after{content:"推荐";display:inline-block;margin-left:6px;padding:2px 8px;border-radius:999px;background:var(--primary);color:#fff;font-size:11px;font-weight:600;vertical-align:2px}
.compare-table th.best,.compare-table td.best{background:var(--primary-soft);color:var(--primary-deep)}
.compare-table td.best{font-weight:600}

.data-section{background:radial-gradient(820px 420px at 50% -8%,rgba(255,107,61,.20),transparent 62%),var(--dark);color:#fff}
.data-section .section-title{color:#fff}
.data-section .section-sub{color:rgba(255,255,255,.62)}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px}
.data-item{text-align:center;padding:38px 20px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);transition:transform .3s,box-shadow .3s}
.data-item:hover{transform:translateY(-6px);box-shadow:0 16px 36px rgba(0,0,0,.30)}
.data-num{font-size:46px;font-weight:900;line-height:1.2;color:#fff}
.data-num .unit{font-size:22px;font-weight:700;color:var(--primary);margin-left:3px}
.data-label{margin-top:12px;font-size:14.5px;color:rgba(255,255,255,.65)}

.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.review-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .3s,box-shadow .3s}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.review-head{display:flex;align-items:center;gap:14px}
.avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#FFB08C);color:#fff;font-size:19px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.review-user b{display:block;font-size:15.5px;line-height:1.4}
.stars{display:block;color:#FFB020;font-size:13px;letter-spacing:2px;margin-top:3px}
.review-text{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.85}

.update-card{max-width:760px;margin:48px auto 0;background:#fff;border:1px solid var(--border);border-radius:20px;padding:36px 40px;box-shadow:var(--shadow)}
.update-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:20px;border-bottom:1px dashed var(--border)}
.update-ver{font-size:21px;font-weight:800;color:var(--primary-deep)}
.update-date{font-size:14px;color:var(--text-2)}
.update-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.update-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.7}
.update-list li::before{content:"";position:absolute;left:4px;top:9px;width:7px;height:7px;border-radius:50%;background:var(--primary)}

.faq-list{max-width:760px;margin:48px auto 0;display:flex;flex-direction:column;gap:16px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item.active{border-color:rgba(255,107,61,.38);box-shadow:var(--shadow)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:none;border:none;font-size:16px;font-weight:600;color:var(--text);text-align:left}
.faq-arrow{width:10px;height:10px;border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);transform:rotate(45deg);transition:transform .3s,border-color .3s;flex-shrink:0;margin-top:-4px}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease}
.faq-item.active .faq-a{grid-template-rows:1fr}
.faq-item.active .faq-arrow{transform:rotate(225deg);border-color:var(--primary)}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 24px 22px;font-size:14.5px;color:var(--text-2);line-height:1.9}

.download-section{background:radial-gradient(760px 400px at 50% -6%,rgba(255,107,61,.24),transparent 60%),linear-gradient(180deg,var(--dark),#231A12);color:#fff;text-align:center}
.download-title{font-size:40px;font-weight:900;line-height:1.3}
.download-section .ver{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#FFC2A2}
.download-meta{margin-top:16px;font-size:14.5px;color:rgba(255,255,255,.66)}
.download-btns{display:flex;justify-content:center;gap:20px;margin-top:36px}
.download-btns .btn{padding:16px 42px;font-size:16px}
.download-btns .btn-ios{border-color:rgba(255,255,255,.24);box-shadow:0 4px 16px rgba(0,0,0,.25)}
.download-tip{margin-top:28px;font-size:14.5px;color:rgba(255,255,255,.78)}

.footer{background:#1E1711;color:rgba(255,255,255,.55);text-align:center;padding:34px 0}
.footer a{color:rgba(255,255,255,.88);transition:color .2s}
.footer a:hover{color:var(--primary)}
.footer-copy{font-size:14px}

.back-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;border:none;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(255,107,61,.35);opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity .3s,transform .3s,visibility .3s;z-index:99}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--primary-deep)}
.back-top svg{width:20px;height:20px}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

@media (max-width:1100px){
  .logo{font-size:22px}
  .nav-menu a{padding:6px 8px;font-size:13px}
  .nav-download{padding:7px 14px}
  .hero-title{font-size:38px}
  .hero-inner{gap:36px}
}
@media (max-width:1024px){
  .works-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .data-grid{gap:18px}
}

@media (max-width:768px){
  :root{--nav-h:60px}
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section-title{font-size:26px}
  .section-sub{font-size:14px}
  .nav-menu{display:none}

  .hero{padding:calc(var(--nav-h) + 32px) 0 52px}
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-info{text-align:center}
  .hero-title{font-size:30px}
  .hero-desc{margin:16px auto 0;font-size:15px}
  .hero-btns{flex-direction:column;margin-top:26px}
  .hero-btns .btn{width:100%}
  .hero-cover{max-width:320px;margin:0 auto}

  .works-grid{grid-template-columns:1fr;gap:20px}
  .intro-box{grid-template-columns:1fr;gap:26px;padding:28px 22px}
  .intro-text p{font-size:14.5px}
  .intro-list p{font-size:14px}
  .feature-grid{grid-template-columns:1fr}
  .feature-card{padding:26px 22px}

  .compare-wrap{margin-top:40px;border-radius:14px}
  .compare-table th{padding:11px 5px;font-size:13.5px}
  .compare-table td{padding:11px 5px;font-size:13px}
  .compare-table th.best::after{display:none}

  .data-grid{grid-template-columns:repeat(2,1fr);gap:14px;margin-top:40px}
  .data-item{padding:26px 12px}
  .data-num{font-size:34px}
  .data-num .unit{font-size:17px}
  .data-label{font-size:13px}

  .review-grid{grid-template-columns:1fr}
  .update-card{padding:26px 22px}
  .update-head{flex-direction:column;align-items:flex-start;gap:6px}
  .update-list li{font-size:14px}

  .faq-q{padding:17px 18px;font-size:15px}
  .faq-a-inner p{padding:0 18px 18px;font-size:14px}

  .download-title{font-size:29px}
  .download-meta{font-size:12.5px;white-space:nowrap}
  .download-btns{flex-direction:column;gap:14px;margin-top:28px}
  .download-btns .btn{width:100%}
  .download-tip{font-size:13.5px}

  .back-top{right:16px;bottom:16px;width:42px;height:42px}

  .nav .logo,.nav-download{position:relative}
  .nav .logo::after,.nav-download::after{content:"";position:absolute;inset:-8px}
}